BackForward Satellite: Sterna-3 

Satellite details
Acronym Sterna-3
Full name Sterna-3
WIGOS Station Identifier ---
Satellite Description
  • Third satellite in constellation to improve coverage over the polar regions.
  • Based on AWS satellite
  • Main mission: all-weather temperature and humidity profiles.
  • 3-axis stabilised.
Mass at launch 135 kg Dry mass 135 kg
Power 120 W
Data access link no link provided
Data access information
  • Direct Data Broadcast L-Band downlink transmits realtime measurements for nowcasting
  • Data also disseminated to end users using EUMETSAT's EUMETCAST system with some delay.
Orbit Sunsynchronous orbit Altitude 595 km
ECT 11:30 desc


Space agency EUMETSATESA
Status Planned
Details on Status
(as available)
Launch ≥2029 EOL ≥2042
Last update: 2024-02-06
Associated satellite programme and related satellites

Note: red tag: no longer operational , green tag: operational , blue tag : future

Satellite Payload

All known Instruments flying on Sterna-3

Acronym Full name
EPS Sterna Radiometer EPS Sterna Radiometer
Show instrument status and calibration
Satellite frequencies for Earth Observation, data transfer and platform communications and control
Earth observation MW frequencies
Service Sensing mode Frequency (GHz) Bandwidth (MHz) Polarisation Comments
AWS passive 50 GHz - 57.66 GHz - QV 8 temperature sounding channels in O2 band
AWS passive 89 GHz 400 MHz QV Window channel
AWS passive 165.5 GHz 280 MHz QV Weak water vapour channel
AWS passive 175 GHz - 191.31 GHz - QV 5 water vapour channels
AWS passive 317 GHz - 333.15 GHz - QV 4 high freq channels